Parietaria judaica L.

Spreading pellitory (en), Pariétaire diffuse (fr), Pariétaire de Judée (fr), Pariétaire des murs (fr)

Species

Angiosperms > Rosales > Urticaceae > Parietaria

Characteristics

Perennial herb 10–80 cm high; stems woody at base, erect or procumbent to ascending, covered in hooked hairs and scattered glandular and curved hairs. Leaves: lamina lanceolate, elliptic, ovate or rhombic, entire, acute, apiculate or sometimes obtuse at apex, cuneate to narrowly cuneate at base, often slightly decurrent on petiole, (1–) 2–3 (–5) cm long, 0.5–1.5 (–3) cm wide, hairy; lateral veins 2 or 3 pairs, the basal pair more prominent, ± decurrent on midrib; petiole (0.5–) 1–1.5 (–2) cm long. Inflorescence a few-flowered sessile cymule or cluster of male, female and bisexual flowers; bracts leafy, often connate at base. Male flowers sessile, c. 1 mm long. Female flowers subsessile or on pedicel 1–2 mm long; perianth 4-dentate, c. 2 mm long; ovary ovoid; style thin, long; stigma capitate. Bisexual flowers numerous. Achenes ellipsoidal or ovoid, c. 1–1.5 mm long, smooth.
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Herbs , perennial from crown, 1-8dm. Stems ascending, erect, or decumbent. Leaf blades narrowly to broadly elliptic, lance-elliptic, or ovate, 1.3-9 × 0.8-4.5 cm, base attenuate, cuneate, or broadly rounded, apex abruptly acuminate to long-attenuate. Flowers: involucral bracts 1.5-2.5 mm; tepals ca. 2-3.5 mm, longer than bracts. Achenes dark brown, symmetric, 1-1.2 × 0.6-0.9 mm, apex acute, mucro absent or minute; stipe centered, on cylindric base.
Procumbent or ascending, densely hairy perennial. Stem red-tinged, usually much-branched, up to 60 cm long. Lvs thick, dark green, dull, ovate to elliptic, acute to acuminate, 1-4-(5) cm long. Petioles much < blade. Cymes congested. Bracteoles < perianth at fruiting, shortly connate at base. Perianth tinged red at flowering. Achenes ovoid, dark glossy green to black, 1-1.5 mm long.
A perennial herb which grows 60 cm tall. It spreads to 60 cm across. Male and female plants must be grown if seed is required. The leaves are oval and have hairs on the veins underneath. The flowers are green and in clusters in the axils of the leaves. The flowers are either male or female and borne on the same plant.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality
Pollination anemogamy
Spread epizoochory
Mature width (meter) 0.6
Mature height (meter) 0.6
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. It grows on hedgebanks and dry walls. It does best in an alkaline soil. It grows in well drained to dry soils and can grow in full sun or light shade. In Argentina it grows from sea level to 1,500 m above sea level. It suits hardiness zones 5-10. Hobart Botanical Gardens 1
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Weed of gardens, urban paths, creek banks and wasteland; favours damp and shady sites; often occurs around buildings and on structures, often growing in gaps in concrete and between bricks.
Hedgebanks, cracks in rocks and dry walls.
Light 6-9
Soil humidity 1-6
Soil texture 4-9
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 5-10

Usage

The young shoots are eaten raw or cooked.
Uses medicinal
Edible leaves shoots
Therapeutic use Sclerosis (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed. They are easily grown by division of the clump in spring.
Mode divisions seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Parietaria judaica habit picture by Lupus Nadine (cc-by-sa)
Parietaria judaica habit picture by Maarten Vanhove (cc-by-sa)
Parietaria judaica habit picture by Quiñoy Yago (cc-by-sa)

Leaf

Parietaria judaica leaf picture by Alfredo (cc-by-sa)
Parietaria judaica leaf picture by Charles Wanner (cc-by-sa)
Parietaria judaica leaf picture by Séverine Venat Bonnouvrier (cc-by-sa)

Flower

Parietaria judaica flower picture by Arianna (cc-by-sa)
Parietaria judaica flower picture by Kai Best (cc-by-sa)
Parietaria judaica flower picture by Daniel de Laraho (cc-by-sa)

Fruit

Parietaria judaica fruit picture by Patrice Nodet (cc-by-sa)
Parietaria judaica fruit picture by hieracium eriophorum (cc-by-sa)
Parietaria judaica fruit picture by Nathalie Potel (cc-by-sa)

Distribution

Parietaria judaica world distribution map, present in Australia, France, New Zealand, Pakistan, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:131067-3
WFO ID wfo-0000473199
COL ID 4DMBB
BDTFX ID 47921
INPN ID 112410
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Parietaria velutina Parietaria thymifolia Parietaria tibethana Parietaria littoralis Parietaria maderensis Parietaria ramiflora Parietaria punctata Parietaria multicaulis Parietaria jaxartica Parietaria diffusa Parietaria pilosa Parietaria officinalis subsp. judaica Parietaria judaica

Lower taxons

Parietaria judaica subsp. afghanica Parietaria judaica subsp. persica Parietaria judaica subsp. speluncarum